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/** @file libradsec-base.h
@brief Low level API for libradsec. */
/* FIXME: License blurb goes here. */
#include <unistd.h>
#include <stdint.h>
#include <sys/socket.h>
#include "libradsec.h"
/* Function prototypes. */
/** Establish a connection.
@param type Connection type.
@param addr Network address to connect to.
@param cred Credentials, or NULL.
@return A file descriptor or -1 if an error occurred, in which
case errno is set appropriately. */
int rs_connect(const struct rs_config *conf,
const struct sockaddr *addr,
socklen_t addrlen);
/** Disconnect.
@param fd File descriptor to close.
@return 0 on success or -1 if an error occurred, in which case
errno is set appropriately. */
int rs_disconnect(const struct rs_config *conf,
int fd);
/** Allocate and initialize a packet from a buffer containing a RADIUS
message header. The packet should be freed using @a
rs_packet_free().
@param ctx Context.
@param buf Buffer with on-the-wire data with RADIUS message
header.
@param count Optionally a pointer to a size_t where the number of
additional octets needed to complete the RADIUS message will be
written. Or NULL.
@return A pointer to a newly allocated packet or NULL on error.
*/
struct rs_packet *rs_packet_new(const struct rs_config *ctx,
const uint8_t buf[RS_HEADER_LEN],
size_t *count);
/** Parse a RADIUS packet and store it in @a packet.
@param ctx Context.
@param packet A pointer to the address of a struct rs_packet
allocated by @a rs_packet_new(). Will be freed if an error
occurs.
@param buf Buffer with on-the-wire data with RADIUS message, not
including the four octet RADIUS header.
@param buflen Number of octets in @a buf.
@return *packet or NULL on error. If NULL, the packet has been
freed and *packet is no longer valid.
*/
struct rs_packet *rs_packet_parse(const struct rs_config *ctx,
struct rs_packet **packet,
const uint8_t *buf,
size_t buflen);
/** Free a packet that has been allocated by @a rs_packet_new().
@param ctx Context.
@param packet Packet to free.
*/
void rs_packet_free(const struct rs_config *ctx,
struct rs_packet **packet);
/** Serialize a packet.
@param packet Packet to serialize.
@param buf Buffer to store the serialized packet in.
@param buflen Length of buffer.
@return Number of bytes written to buf or 0 if the buffer wasn't
large enough to hold the packet or < 0 in case the packet couldn't
be serialized for some other reason (FIXME: elaborate) */
ssize_t rs_packet_serialize(const struct rs_packet *packet,
uint8_t *buf,
size_t buflen);
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